If you are seeing the default gold XP window then you need to re-download Experience using the utility. Otherwise the XP bar may be hiding down along the bottom edge of the game window where the default bar was previously. Press F10 and stretch/move it up to make it visible.
If this is literally a brand new installation then the XP window will be in the upper left-hand corner of the game window and all you will see is a blue titlebar. Right-click the bar and minimize/maximize a couple of times to make the window appear correctly.